Furnace-door handle.



G. STEELE.

FURNACE DOOR HANDLE. APPLICATION FILED JAN.29. 1912.

1,155,689. Patented Oct. 5, 1915.

GABRIEL STEELE, OF SIOUX CITY, IOWA.

FURNACE-DOOR HANDLE.

Specification of Letters Patent.

Patented oet. 5 rare.

Application filed January 29, 1912. Serial No. 674,103.

To all whom it may concern Be it known that I, Gasman STEELE, a citizen of the United States, residing at Sioux City, in the county of Woodbury and State of Iowa, have invented certain new and useful Improvements in Furnace-Door Handles, of which the following is a specification.

This invention relates to handles for fur-' nace doors, and has for its object to provide a handle of simple structure which may be applied to a door and which is provided with means whereby a draft of air may pass through the handle to keep the same cool. A handle having this provision may be readily grasped by an operator to open or close the door, thereby avoiding the necessity of using a fire shovel or other implement generally used for this purpose.

With the above object in view the handle structure includes a pipe L adapted to be screwed or otherwise secured in the door and a pipe section connected with the outer end of the said L. A-bushing is located in the pipe section for the purpose of retarding the passage of air through the handle, and a damper is located in the pipe section and is adapted to be moved to open or close the passageway through the said pipe section.

For a full understanding of the'invention reference is to be had to the following description and accompanying drawing, in which:

Figure 1 is a front elevation of part of a furnace, showing the handle applied to the fire door; Fig. 2 is a vertical sectional view of the handle; Fig. 3 is a transverse sectional. view, of the handle, cut on the line 33 of Fig. 2.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawing by the same reference characters.

The handle consists of an L fitting 1 adapted to be screwed or otherwise secured into the furnace door 2. A pipe section 3 is screw threaded in the outer end of the L fitting 1 and is open at its outer end. The inner end of the fitting 1 opens into the furnace which is normally closed by the door 2. A bushing 4 is screwed or otherwise detachably fitted in the end portion of the pipe section 3 adjacent the outer end of the L fitting 1. Bushings 4 of different interior diameter may be provided and one may be substituted for another when it is desired to increase or decrease the passageway of the air through the handle. A damper 5 is pivoted in the pipe section 3 and is provided with a handle 6 which extends beyond the outer side of the said pipe section. By turning the damper 5 the passageway for the air through the handle may be completely closed or partially closed, as desired.

A. furnace door equipped with a handle as described may be readily opened or closed without danger of burning the operators hand. The draft through the handle caused by the draft of the furnace will always keep the handle cool, and by regulating the position of the damper 5, it is possible to keep the handle cool without admitting too much air to the furnace above the fire. By regulating the damper, I provide means also for admitting any desired amount of air. to the furnace above the fire and thus the handle performs two functions. Under ordinary circumstances, the damper 5 may be kept closed and only opened when it is desired to cool the handle sufiiciently to permit the furnace door to be opened. The bushing 4: has two functions; it not only provides means for reducing the diameter of the air passage through the handle, but it reinforces that portion of the handle which is the weakest. Furnace doors are usually very heavy. With an angular handle such as described, there is a tendency to bend the handle outward when strain is put upon it. By providing the bushing 4 at the junction of the extension 3 with the L-shaped main portion 1, this tendency to bend the handle is resisted and the handle is strengthened at this point. i

Having thus described the invention, what is claimed as new is:

1. The combination with a furnace door, of a handle therefor comprising an angular tubular member, one end of which is attached to the door and the outer end of which is upwardly curved, an upwardly disposed tubular extension inserted in the upwardly curved end of the tubular member, and a reinforcing annular bushing disposed in the base of said extension and extending below the upwardly turned end of the first named member.

2. The combination with a furnace door, of a handle therefor comprising an angular tubular member, one end of which is screw threaded into the door, the other end of which extends upward and is interiorly screw threaded, an extension having its base engaging the screw threaded end of the first named member, and an annular bushing having screw threaded engagement with the interior face of the base of the extension, said bushing extending above and below the upwardly turned end of the first named member.

3. The combination with a furnace door, of a handle comprising a tubular angular member, one end of which is screw threaded into said furnace door, said member opening through the furnace door, the other end of the member being upwardly extending and interiorly screw threaded, a Vertically disposed tubular extension having screw threaded engagement with the upwardly turned end of the first named member, a damper in said extension, and an annular bushing screw threaded'into the base of the extension and extending above and below the angular end of the first named-member.

In testimony whereof, I aflix my signature in presence of two witnesses.

GABRIEL STEELE. 1; 5.

Witnesses i GEO. E. BURDICK, R. W. MCDONALD.

Copies of this patent may be obtainedlfor five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

